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Preparation and reactivity of half-sandwich organic azide complexes of osmium†
Dalton Transactions ( IF 4 ) Pub Date : 2018-08-10 00:00:00 , DOI: 10.1039/c8dt02230e
Gabriele Albertin 1, 2, 3, 4 , Stefano Antoniutti 1, 2, 3, 4 , Jesús Castro 5, 6, 7, 8, 9 , Verena Ganz 1, 2, 3, 4 , Francesca Sibilla 1, 2, 3, 4
Affiliation  

Organic azide complexes [Os(η5-C5H5)(κ1-N3R)(PPh3){P(OR1)3}]BPh4 (1, 2) [R = CH2C6H5 (a), CH2C6H4-4-CH3 (b), CH(CH3)C6H5 (c), C6H5 (d); R1 = Me (1), Et (2)] were prepared by allowing bromo-compounds [OsBr(η5-C5H5)(PPh3){P(OR1)3}] to react first with AgOTf and then with an excess of azide in toluene. Benzylazide complexes reacted in solution leading to imine derivatives [Os(η5-C5H5){κ1-NH[double bond, length as m-dash]C(R2)Ar}(PPh3){P(OR1)3}]BPh4 (3, 4) [R2 = H (a, b), CH3 (c); Ar = C6H5, C6H4-4-CH3; R1 = Me (3), Et (4)]. Phenylazide, on the other hand, reacted in solution affording the dinuclear dinitrogen complex [{Os(η5-C5H5)(PPh3)[P(OMe)3]}2(μ-N2)](BPh4)2 (5). Depending on the nature of the R substituent, the reaction of the p-cymene complex [OsCl26-p-cymene)(PPh3){P(OEt)3}] with RN3 yielded imine [OsCl(η6-p-cymene){κ1-NH[double bond, length as m-dash]C(H)Ar}{P(OEt)3}]BPh4 (6) (Ar = C6H4-4-CH3) and amine derivatives [OsCl(η6-p-cymene)(κ1-NH2C6H5){P(OEt)3}]BPh4 (7). The complexes were characterised spectroscopically (IR, 1H, 31P, 15N NMR) and by the X-ray crystal structure determination of [{Os(η5-C5H5)(PPh3)[P(OMe)3]}2(μ-N2)](BPh4)2 (5).

中文翻译:

s半三明治有机叠氮化物配合物的制备和反应性

有机叠氮化物的复合物[OS(η 5 -C 5 H ^ 5)(κ 1 -N 3 R)(PPH 3){P(OR 1)3 }] BPH 412)[R = CH 2 C ^ 6 ħ 5a),CH 2 C 6 H 4 -4-CH 3b),CH(CH 3)C 6 H 5c),C 6 H 5d);R1 =我(1)等(2)],通过使溴化合物[OsBr(η制备5 -C 5 H ^ 5)(PPH 3){P(OR 1)3 }]至第一带的AgOTf和然后反应用过量的叠氮化物的甲苯。Benzylazide络合物反应在溶液中导致亚胺衍生物[OS(η 5 -C 5 H ^ 5){κ 1 -NH [双键,长度为m-破折号]C(R2)中的Ar}(PPH 3){P(OR 1)3 }] BPH 434) [R 2 = H(ab),CH 3c); 氩= C 6 H5,C 6 H 4 -4-CH 3 ; R1 = Me( 3),Et( 4)]。基苯,在另一方面,反应在溶液中,得到双核络合物二氮[{OS(η 5 -C 5 H ^ 5)(PPH 3)[P(OME) 3 ]} 2(μ-N 2)](BPH 4 2 5)。取决于R取代基的性质,所述的反应p -cymene络合物[OSCL 2(η 6 - p -cymene)(PPH 3){P(OET) 3}]与RN 3得到亚胺[OSCL(η 6 - p -cymene){κ 1 -NH [双键,长度为m-破折号]C(H)中的Ar} {P(OET)3 }] BPH 46)(AR = C 6 H ^ 4 -4 -CH 3)和胺衍生物[OSCL(η 6 - p -cymene)(κ 1 -NH 2 ç 6 ħ 5){p(OET)3 }] BPH 47)。配合物通过光谱表征(IR,1 H,31 P,15ÑNMR)和由X射线晶体结构测定的[{OS(η 5 -C 5 H ^ 5)(PPH 3)[P(OME)3 ]} 2(μ-N 2)](BPH 425)。
更新日期:2018-08-10
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